/* YogaSoul Eventi — interazioni widget */
(function () {
    "use strict";

    function fmtMoney(v, sym) {
        if (v <= 0) return "Gratuito";
        return (
            sym +
            v.toLocaleString("it-IT", {
                minimumFractionDigits: 2,
                maximumFractionDigits: 2,
            })
        );
    }

    function apiBase(el) {
        var w = el.closest(".yse-widget");
        return (w && w.getAttribute("data-api")) || "";
    }

    function initCard(card) {
        var api = apiBase(card);
        var eid = parseInt(card.getAttribute("data-eid"), 10);
        var cost = parseFloat(card.getAttribute("data-cost")) || 0;
        var sym = card.getAttribute("data-sym") || "€";
        var maxQty = parseInt(card.getAttribute("data-maxqty"), 10) || 0;
        var waitMode = card.getAttribute("data-waitmode") === "1";

        // Toggle dettagli
        var toggle = card.querySelector(".yse-toggle");
        if (toggle) {
            toggle.addEventListener("click", function () {
                var det = card.querySelector(".yse-details");
                if (!det) return;
                var open = det.classList.toggle("yse-open");
                toggle.classList.toggle("yse-on", open);
                toggle.setAttribute("aria-expanded", open ? "true" : "false");
                var lbl = toggle.querySelector(".yse-tlabel");
                if (lbl) lbl.textContent = open ? "Chiudi" : "Dettagli";
            });
        }

        var booking = card.querySelector(".yse-booking");
        var numEl = card.querySelector(".yse-num");
        if (!numEl) return; // esaurito senza lista d'attesa: nessuna prenotazione

        var totEl = card.querySelector(".yse-total .yse-val");
        var minus = card.querySelector(".yse-minus");
        var plus = card.querySelector(".yse-plus");
        var openBtn = card.querySelector(".yse-open");
        var form = card.querySelector(".yse-bform");
        var submit = card.querySelector(".yse-submit");
        var qty = 1;

        function refresh() {
            numEl.textContent = qty;
            if (totEl) totEl.textContent = fmtMoney(qty * cost, sym);
            minus.disabled = qty <= 1;
            plus.disabled = qty >= maxQty;
            if (submit) {
                submit.textContent = waitMode
                    ? "Iscriviti alla lista d'attesa"
                    : "Conferma prenotazione" +
                      (cost > 0 ? " · " + fmtMoney(qty * cost, sym) : "");
            }
        }
        minus.addEventListener("click", function () {
            if (qty > 1) {
                qty--;
                refresh();
            }
        });
        plus.addEventListener("click", function () {
            if (qty < maxQty) {
                qty++;
                refresh();
            }
        });
        refresh();

        openBtn.addEventListener("click", function () {
            form.classList.add("yse-open");
            openBtn.style.display = "none";
            var n = card.querySelector(".yse-name");
            if (n) n.focus();
        });

        submit.addEventListener("click", function () {
            var name = card.querySelector(".yse-name").value.trim();
            var surname = card.querySelector(".yse-surname").value.trim();
            var email = card.querySelector(".yse-email").value.trim();
            var privacy = card.querySelector(".yse-c-privacy").checked;
            var mkt = card.querySelector(".yse-c-mkt").checked;
            var hp = card.querySelector(".yse-hp").value;
            var err = card.querySelector(".yse-error");

            if (!name || !surname) {
                err.textContent = "Inserisci nome e cognome.";
                return;
            }
            if (!/^[^@\s]+@[^@\s]+\.[^@\s]+$/.test(email)) {
                err.textContent = "Inserisci un'email valida.";
                return;
            }
            if (!privacy) {
                err.textContent = "Devi accettare l'informativa privacy.";
                return;
            }
            err.textContent = "";

            submit.disabled = true;
            submit.textContent = "Invio in corso…";

            var body = new URLSearchParams();
            body.set("event_id", eid);
            body.set("name", name);
            body.set("surname", surname);
            body.set("email", email);
            body.set("seats", qty);
            body.set("consent", "1");
            body.set("marketing", mkt ? "1" : "0");
            body.set("website", hp); // honeypot

            fetch(api + "/book.php", {
                method: "POST",
                headers: {
                    "Content-Type":
                        "application/x-www-form-urlencoded;charset=UTF-8",
                },
                body: body.toString(),
            })
                .then(function (r) {
                    return r.json().then(function (j) {
                        return { status: r.status, j: j };
                    });
                })
                .then(function (res) {
                    var j = res.j || {};
                    if (j.ok) {
                        showDone(booking, j, name, surname, email);
                        return;
                    }
                    // Errori gestiti
                    submit.disabled = false;
                    refresh();
                    if (j.code === "partial") {
                        err.textContent =
                            j.error ||
                            "Sono rimasti solo " + j.remaining + " posti.";
                        if (
                            typeof j.remaining === "number" &&
                            j.remaining > 0
                        ) {
                            maxQty = j.remaining;
                            if (qty > maxQty) {
                                qty = maxQty;
                                refresh();
                            }
                        }
                    } else {
                        err.textContent =
                            j.error || "Prenotazione non riuscita. Riprova.";
                    }
                })
                .catch(function () {
                    submit.disabled = false;
                    refresh();
                    err.textContent = "Errore di rete. Riprova.";
                });
        });

        function showDone(container, j, name, surname, email) {
            var waiting = j.status === "waiting";
            var title = waiting
                ? "Sei in lista d'attesa"
                : "Prenotazione confermata!";
            var msg =
                j.message ||
                (waiting
                    ? "Ti avviseremo appena si libera un posto."
                    : "Ti abbiamo inviato una email di riepilogo.");
            container.innerHTML =
                '<div class="yse-done">' +
                '  <div class="yse-ok"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" width="24" height="24">' +
                '    <path d="M20 6 9 17l-5-5"/></svg></div>' +
                "  <h3>" +
                title +
                "</h3>" +
                "  <p><strong>" +
                escapeHtml(name + " " + surname) +
                "</strong> · " +
                escapeHtml(email) +
                "</p>" +
                "  <p>" +
                escapeHtml(msg) +
                "</p>" +
                "</div>";
        }
    }

    function escapeHtml(s) {
        var d = document.createElement("div");
        d.textContent = s;
        return d.innerHTML;
    }

    // Lightbox condiviso
    function ensureLightbox() {
        var lb = document.querySelector(".yse-lightbox");
        if (lb) return lb;
        lb = document.createElement("div");
        lb.className = "yse-lightbox";
        lb.innerHTML =
            '<button class="yse-lbclose" aria-label="Chiudi">&times;</button><img src="" alt="">';
        document.body.appendChild(lb);
        function close() {
            lb.classList.remove("yse-open");
            lb.querySelector("img").src = "";
        }
        lb.addEventListener("click", function (e) {
            if (e.target === lb || e.target.classList.contains("yse-lbclose"))
                close();
        });
        document.addEventListener("keydown", function (e) {
            if (e.key === "Escape") close();
        });
        return lb;
    }

    function init() {
        document.querySelectorAll(".yse-card").forEach(initCard);
        document.querySelectorAll(".yse-gallery img").forEach(function (img) {
            img.addEventListener("click", function () {
                var lb = ensureLightbox();
                lb.querySelector("img").src = img.getAttribute("data-full");
                lb.classList.add("yse-open");
            });
        });
    }

    if (document.readyState === "loading") {
        document.addEventListener("DOMContentLoaded", init);
    } else {
        init();
    }
})();